Filter or Collection for Metadata State

Question

When trying to save metadata, LR sometimes reports a conflict about a file having been changed by another program or other error. It is almost impossible to track down those conflicts as the only indicator of which images have the problem is the small indicator on the thumbnail.
I would like a filter or collection for metadata states. I am particularly interested in a) conflicts where LR believes the file was changed by another program, b) metadata not yet written to disk, c) any metadata errors.

Answer 1

And since some of these conflicts put the images in a state of constantly flipping between a metadata state of "Up to Date" and "..." and thus producing a memory leak, I too would love to easily isolate these images.  If I sort them by edit time this more than likely will find the conflicts  (which are completely false by the way since I do not edit or even view the DNG files in any other program) more quickly but the last time it was of no help.  I have had to turn off the automatically writing of XMP to stop the memory leak and remember to save after each session.